Patent US5643228A successfully refreshed from Google Patents.
US5643228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter
Assignee: MB FINANCIAL BANK NA
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Filing: 1995-11-13
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Granted: 1997-07-01
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Expires: 2015-11-13
Abstract
Abstract A catheter for introducing fluid into the vascular system includes ports in the catheter's sidewall which are obliquely angled with respect to the longitudinal axis of the catheter. Certain pairs of ports are oriented toward each other, and certain other pairs of ports are oriented away from each other. The arrangement of ports causes fluid to exit the ports in streams which are oriented at oblique angles corresponding to the angles of the port. The obliquely angled streams create advantageous circulation paths proximate to the catheter which generally improve efficacy of the injected fluid associated with the medical application. The catheter may be used for a variety of purposes, including to perform thrombolysis.
Inventors
- 👤 David E. Schucart
- 👤 Edward M. Goldberg
- 👤 Lev A. Melinyshyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:09
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
114 words
A catheter for introducing fluid into a blood vessel comprising: an elongated catheter body having a sidewall defining a catheter lumen, the catheter body having a proximal portion with means for introducing fluid streams into the lumen and a distal portion adapted to be received into the vessel; and at least two ports extending through the sidewall at oblique angles relative to the longitudinal axis of the lumen, said ports being either oriented toward one another to send corresponding streams of fluid toward each other or oriented away from each other to send one stream of fluid toward one end of the catheter and the other stream toward the opposite end of the catheter.
Claim 2
Dependent Claim
114 words
A catheter for introducing fluid into a blood vessel comprising: an elongated catheter body having a sidewall defining a catheter lumen, the catheter body having a proximal portion with means for introducing fluid streams into the lumen and a distal portion adapted to be received into the vessel; and at least two ports extending through the sidewall at oblique angles relative to the longitudinal axis of the lumen, said ports being either oriented toward one another to send corresponding streams of fluid toward each other or oriented away from each other to send one stream of fluid toward one end of the catheter and the other stream toward the opposite end of the catheter.
Claim 3
Independent Claim
132 words
An apparatus for introducing fluid into the vascular system comprising: an elongated body having a proximal portion and a distal portion, the distal portion sized to be inserted into the vascular system, the body having a sidewall defining a lumen, means for introducing fluid streams into the lumen under pressure; and at least two ports extending through the sidewall at the distal portion, the ports having means for directing the fluid out of the lumen at oblique angles relative to the longitudinal axis of the lumen, said ports being either oriented toward one another to send corresponding streams of fluid toward each other or oriented away from each other to send one stream of fluid toward one end of the catheter and the other stream toward the opposite end of the catheter.
Claim 4
Independent Claim
132 words
An apparatus for introducing fluid into the vascular system comprising: an elongated body having a proximal portion and a distal portion, the distal portion sized to be inserted into the vascular system, the body having a sidewall defining a lumen, means for introducing fluid streams into the lumen under pressure; and at least two ports extending through the sidewall at the distal portion, the ports having means for directing the fluid out of the lumen at oblique angles relative to the longitudinal axis of the lumen, said ports being either oriented toward one another to send corresponding streams of fluid toward each other or oriented away from each other to send one stream of fluid toward one end of the catheter and the other stream toward the opposite end of the catheter.
Claim 5
Dependent Claim
17 words
The apparatus of claim 2 comprising more than two ports spaced along the length of the sidewall.
Claim 6
Dependent Claim
15 words
The apparatus of claim 2, wherein at least two ports are oriented toward each other.
Claim 7
Dependent Claim
16 words
The apparatus of claim 2, wherein at least two ports are oriented away from each other.
Claim 8
Dependent Claim
32 words
The apparatus of claim 5, wherein one of the ports is located on one side of the elongated body and the other is located on the other side of the elongated body.
Claim 9
Dependent Claim
26 words
The apparatus of claim 5, wherein at least one pair of ports is located in each of the four quadrants of the circumference of the sidewall.
Claim 10
Dependent Claim
23 words
The apparatus of claim 2, wherein the ports comprise holes having a substantially circular cross-section with a diameter between about 0.001" and 0.012".
Claim 11
Dependent Claim
23 words
The apparatus of claim 2, wherein the ports comprise holes having a substantially circular-cross section with a diameter between about 0.005" and 0.010".
Claim 12
Dependent Claim
25 words
The apparatus of claim 2, wherein the oblique angles are between about 30 and 60 degrees with respect to the longitudinal axis of the lumen.
Claim 13
Dependent Claim
17 words
The apparatus of claim 1 comprising more than two ports spaced along the length of the sidewall.
Claim 14
Dependent Claim
13 words
The apparatus of claim 1, wherein the ports are oriented toward each other.
Claim 15
Dependent Claim
14 words
The apparatus of claim 1, wherein the ports are oriented away from each other.
Claim 16
Dependent Claim
33 words
The apparatus of claim 1, wherein at least one of the ports is located on one side of the elongated body and another is located on the other side of the elongated body.
Claim 17
Dependent Claim
26 words
The apparatus of claim 1, wherein at least one pair of ports is located in each of the four quadrants of the circumference of the sidewall.
Claim 18
Dependent Claim
24 words
The apparatus of claim 1, wherein the ports comprise holes having a substantially circular cross section with a diameter between about 0.001" and 0.012".
Claim 19
Dependent Claim
23 words
The apparatus of claim 1, wherein the ports comprise holes having a substantially circular-cross section with a diameter between about 0.005" and 0.010".
Claim 20
Dependent Claim
25 words
The apparatus of claim 1, wherein the oblique angles are between about 30 and 60 degrees with respect to the longitudinal axis of the lumen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |